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约找到 7826 条结果,耗时 0.375 秒
在另一个论坛里找到的一些资料:
玄明
16年7个月前
回复于
电气电工
内容:大部分都跟风搞
燃料
电池,电化学(双电层)超级电容和准法拉第超级电容。
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韩菱纱
15年7个月前
发表于
喷气推进
内容:为了雾化
燃料
,空气在缩小部速度加大,因此进气通道被设计为喇叭状,也称为空气节流阀。
[原创] 电池漫谈
TBsoft
8年0个月前
发表于
化学
内容:从另一个角度看,空气电池中发生的总反应实际是阳极(负极)金属与氧气的反应,与金属在氧气中的燃烧反应本质相同,因此空气电池也可以看作是以金属和空气为
燃料
的
燃料
电池,当金属(
燃料
之一)耗尽时,只要换上新的金属即可让电池继续工作下去,,因此空气电池的一种“充电”方式实际上是更换金属负极(阳极)极板,等同于补充
燃料
,可以看作是另一个角度的“二次电池”。
发动机新技术及发展趋势
1211
19年3个月前
发表于
极客DIY
内容:当发动机转速增快,废气排出速度与涡轮转速也同步增快,叶轮就压缩更多的空气进入气缸,空气的压力和密度增大可以燃烧更多的
燃料
,相应增加
燃料
量和调整一下发动机的转速,就可以增加发动机的输出功率了。,无锡油泵油嘴研究所已把部分成果应用到双
燃料
机上实现了天然气和液化石油气的电控化 ,目前正进行匹配试验。,MPI系统由
燃料
供给系统(电动汽油泵、燃油滤清器、分配管、压力调节器、喷油器和冷起动阀等)、空气供给系统(空气滤清器、空气流量计、进气系统等)以及电子控制系统(电子控制单元ECU、传感器)等组成。
电动汽车,接下来世界格局中关键的一步棋
公众号EV技研作者1900
5年5个月前
发表于
电动汽车
内容:来临无刷电机驱动电路结构解析电动汽车背后藏着——石油、战争、地缘政治6分钟完成充电,续航320km——东芝TNO/NCM电池初探老铁,来杯特斯拉专利文献不,电磁口味的【日本庆应大学、群马大学数据】EV与
燃料
车的能量效率对比驾照依旧免不了
出售大量闲置物品(价格可私聊)同时寻找失散多年的盟友【向拉风定了一个火箭发动机700元】
Zhangrky
9年6个月前
发表于
跳蚤市场
内容:这是一种外燃发动机,使
燃料
连续地燃烧,膨胀空气(或氦气或氢气) 作为介质使活塞运动,膨胀气体在冷腔冷却,反复地进行这样的循环过程。
离心式喷注器设计试制及采用该喷注器的微型液氧煤油发动机的设计与试验报告
琉璃冬
5年4个月前
回复于
喷气推进
内容:富氧燃气和
燃料
从断裂处喷出。
SRM教程
HUTK152
1个月19天前
发表于
喷气推进
内容:即要首先明确发动机燃烧室(药柱)可选尺寸,并确定尺寸,根据所需要使用的
燃料
性能选取合理的燃烧室理想室压)这里以原版为例(英文版)请注意:SRM专门用于设计使用糖类推进剂的发动机,且仅适用于空心圆柱形推进剂药柱糖类推进剂会产生大量的凝聚相燃烧产物
江河滚滚能量无穷
大仙
16年6个月前
发表于
电气电工
内容:2.水电用的是不花钱的
燃料
,发电成本低,积累多,投资回收快,大中型水电站一般3-5年就可收回全部投资。
关于模型火箭、火箭模型、竟技火箭、业余火箭等用语的规定
科创网
13年10个月前
发表于
喷气推进
内容:一般比赛中,竞技者通过合理设计火箭的结构和外形(不包含发动机及
燃料
),在相同的发动机条件下,就火箭的飞行高度、载荷质量或特定条件(如采用降落伞)下的滞空时间展开竞技,以飞行高度高或者滞空时间长,载荷重者为胜
回 34楼(火箭爱好者) 的帖子
拔刀斋
12年8个月前
回复于
喷气推进
内容:固体火箭由于氧化剂和
燃料
预先混合,带推进剂的操作涵盖了从混合药柱原料到试车的全过程。
气氧煤油发动机喷注器
kc-89277
2年11个月前
回复于
喷气推进
内容:主要还是考虑到
燃料
管路压力震荡。
【起草】《中国业余探空火箭安全规定》 讨论帖
bh,王者归来
12年3个月前
回复于
喷气推进
内容:因为此类火箭通常
燃料
组分为BP、KNDX或KNSU,装药量不超过100g。,2、使用新型号的
燃料
时。,遇有下列情况,必须重新进行
燃料
发动机测试(采用测试发动机进行试车):1、
燃料
关键组分的批号、生产厂家发生变动时。,2、
燃料
的配方、制备工艺条件等发生变动时。,3、
燃料
超出允许储存条件、时间时。
求问 关于 SRM
khongyue
13年3个月前
回复于
喷气推进
内容:这些参数用于两种推进剂:硝酸钾/葡萄糖,硝酸钾/山梨糖醇,用标准的配比:氧化剂/
燃料
比65/35(以下分别简称为KNDX和KNSB)。,可以设定任意几段
燃料
。
追逐暗之星辰——星系、暗物质及其它
大仙
16年6个月前
发表于
天文与空间科学
内容:但这些恒星很快就耗尽了它们的
燃料
,在诞生之后几百万年左右就产生超新星爆发,不仅自己炸得四分五裂,还加热了星系中剩余的气体物质,将它们抛向四面八方。
造车新势力的必然性与残酷性
公众号EV技研作者1900
5年5个月前
发表于
电动汽车
内容:来临无刷电机驱动电路结构解析电动汽车背后藏着——石油、战争、地缘政治6分钟完成充电,续航320km——东芝TNO/NCM电池初探老铁,来杯特斯拉专利文献不,电磁口味的【日本庆应大学、群马大学数据】EV与
燃料
车的能量效率对比驾照依旧免不了
我国复合固体推进剂毒理学研究
thd2008
11年10个月前
发表于
喷气推进
内容:我国复合固体推进剂毒理学研究卫生毒理学杂志 1999年第3期第13卷 大会报告作者:蒋芸 彭开良单位:同济医科大学工业毒理学研究室 (武汉 430030) 复合固体推进剂是一种高能、高比冲的火箭
燃料
,,复合固体推进剂的组分及功能类别含量(%)功能常用原材料氧化剂60~80供氧高氯酸铵、奥克特金、黑索金、硝酸铵等粘合剂7~20提供燃烧的元素:碳、氢等端羟基聚丁二烯、端羧基聚丁二烯、聚乙二醇、环氧乙烷四氧呋喃共聚醚等
燃料
,3.2
燃料
占20%左右 常用的有铝粉、硼粉、铍粉、二氧化锆等均为老毒物,铍粉为高毒类可引起肺肉芽肿样结节,诱发恶性肿瘤及肝脏损伤、肝细胞水肿和坏死。
分布式能源技术——电力改革的关键
大仙
16年6个月前
发表于
电气电工
内容:但是天然气的利用必须通过效率更高的燃气轮机和燃气内燃机,由于技术局限,燃气轮机和内燃机的功率不能造的很大,再有天然气成本远高于煤炭,在利用时必须尽可能地提高能源的利用效率,所以天然气作为
燃料
更加适合于用户端的能源系统和热电联产技术的发展,美国的电力改革也是建立在技术的不断发展之上,信息技术正在将发电、输电、供电和用电,以及发电上游的
燃料
供应系统,用电下游的制冷供热系统进行整合优化,这一技术的发展将会从根本上创造一个全新的能源综合供应体系
国外DIY风力发电机
bluebring
10年8个月前
发表于
极客DIY
内容:风力发电没有
燃料
问题,也不会产生辐射或空气污染。 ,现在业内分析家认为,常规能源成本骤增以及***和技术因素对加快风力发电将产生有利影响.高油价促使人们关注风力发电.尽管利用石油发电数量很少,但是 高油价对天然气和煤等被广泛用来发电的其它
燃料
价格有间接的影响
一种新型电磁装备-电磁泵电动机
winsterli
14年4个月前
回复于
电磁炮
内容:目前,新能源发动机主要的几个方向是:氢的制备和存储;
燃料
电池的反应基和
燃料
种类扩大化;镍氢或锂蓄电池的性能增强;超级电容与电池的相辅相成;电池和电容的成本下降;藻类提取物;节能保温建材;风能、太阳能;植树造林
化学实验安全注意事项
zhaokenb
13年10个月前
发表于
化学
内容:严禁将易挥发的液体置于冰箱冷柜中,否则易发生爆炸(KC中貌似先前有案例)60.蛇形冷凝管不得倾斜使用,若迫于空间条件需倾斜使用,请使用直形冷凝管(既可直立使用,又可倾斜使用),球形冷凝管适宜直立使用61.在使用电炉制作火箭
燃料
时,,应注意每次完工后应检查并清理是否有火箭
燃料
碎屑落在电炉丝上,否在在下一次使用时将有可能造成火灾62.不得使用金属药匙触碰电阻式电炉,避免触电63.没有足够理论指导的情况下,不要拆卸较精密的仪器64.蒸馏含乙醇溶剂或丙酮溶剂等易燃溶剂的溶液时
【资料】对Richard Nakka设计的几种发动机的介绍——庆贺论坛开放
lilith
14年0个月前
回复于
喷气推进
内容:6只1/4英寸的高强度螺栓用于固定喷管,(喷管一旦固定就不需要经常取下,
燃料
由头部装入)。
菜鸟造火箭
vip2005pig
11年5个月前
回复于
喷气推进
内容:其次,无论物料在何种水份情况下,均能较好控制操作,不会到处粘结四处污染,属于非常给力的环境友好型工具,这口不粘锅是俺专门为
燃料
加工而网购的,包邮到家才27元,可以说是千值万值。
利用人气压差发电
大仙
16年6个月前
发表于
电气电工
内容:因为这种动力不用任何
燃料
,不排放任何污染物,可以昼夜不停地连续工作,是人类理想的动力之一。
史上最小运载火箭发射成功,SS-520仅2.6吨
太空来电
6年11个月前
发表于
喷气推进
内容:SS-520-5的第一级装有尾翼,载有近1587公斤的HTPB固体
燃料
。
天文教材第一卷发布帖
客星晨出东方
1年11个月前
回复于
天文与空间科学
内容:恒星在主序星阶段停留的时间,取决于其核心氢燃烧的时间,一般来说,质量越小的恒星,其核反应的速度越慢,寿命也就越长,质量的恒星,虽然
燃料
多,但是消耗的也快,所以寿命短。,氦闪产生大量的能量,但对于外部几乎不会导致恒星亮度增加,反而因为星核膨胀,吸热导致光度骤减,进入稳定的氦燃烧阶段,这样对于这颗恒星,其核心是氦的燃烧,其外部氢的壳层依然在燃烧,此时的恒星称之为氦燃烧星,当中心氦核的的
燃料
也用尽的时候,,恒星的核心就会变成以碳氧为主从恒星,而临近核心的外壳则是燃烧的氦壳层,再外层则是燃烧的氢壳层,此时的恒星进入双壳层燃烧阶段,这一阶段称之为渐近巨星支(AGB),当双壳层的
燃料
即将耗尽的时候,恒星的能量已经不能维持其核心不发生引力坍缩
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